// Copyright (C) 2016 The V8 Project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-isnan-number
description: >
  Use non-object value returned from @@toPrimitive method
info: |
  isNaN (number)

  1. Let num be ? ToNumber(number).

  ToPrimitive ( input [ , PreferredType ] )

  [...]
  4. Let exoticToPrim be ? GetMethod(input, @@toPrimitive).
  5. If exoticToPrim is not undefined, then
    a. Let result be ? Call(exoticToPrim, input, « hint »).
    b. If Type(result) is not Object, return result.
features: [Symbol.toPrimitive]
---*/

function Test() {
    var called = 0;
    var obj = {
      valueOf: function() {
        called = NaN;
        return Infinity;
      },
      toString: function() {
        called = NaN;
        return Infinity;
      }
    };

    obj[Symbol.toPrimitive] = function() {
      called += 1;
      return 42;
    };
    assert.sameValue(isNaN(obj), false, "use returned value - non-NaN number");
    assert.sameValue(called, 1, "toPrimitive is called - non-NaN number");

    called = 0;
    obj[Symbol.toPrimitive] = function() {
      called += 1;
      return "this is not a number";
    };
    assert.sameValue(isNaN(obj), true, "use returned value - string to NaN");
    assert.sameValue(called, 1, "toPrimitive is called - string to NaN");

    called = 0;
    obj[Symbol.toPrimitive] = function() {
      called += 1;
      return true;
    };
    assert.sameValue(isNaN(obj), false, "use returned value - boolean true");
    assert.sameValue(called, 1, "toPrimitive is called - boolean true");

    called = 0;
    obj[Symbol.toPrimitive] = function() {
      called += 1;
      return false;
    };
    assert.sameValue(isNaN(obj), false, "use returned value - boolean false");
    assert.sameValue(called, 1, "toPrimitive is called - boolean false");

    called = 0;
    obj[Symbol.toPrimitive] = function() {
      called += 1;
      return NaN;
    };
    assert.sameValue(isNaN(obj), true, "use returned value - NaN");
    assert.sameValue(called, 1, "toPrimitive is called - NaN");
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_TEST; i++) {
    Test();
}
